Looking to replace a Kohler Rialto 1.6 gal. toilet after terrible flooding disaster last weekend. Unfortunately, the entire bathroom (6' tub, tiles, walls, cabinets) is in Kohler "Innocent Blush" pink. So we have to stick w/Kohler. The toilet is in a nook with built-in cabinets above, so it has to be a one-piece. Is the San Rafael with the Ingenium system (K-3467)a reliable model? Thanks in advance.